The plan is often disregarded as the budget is prepared for reasons such as: (a) plans may not be sufficiently detailed to provide guidance in budgeting; (b) the budget process is often rushed and subject to many short-term pressures; (c) planners may have less influence than budgeters, because the budget is the authoritative legal document, while the plan typically does not have the force of law; (d) traditional stereotypes tend to separate "short-term" budgeters from the "long-term" planners concerned with questions over which the government has little control.
Responsibility for public health policy may be divided between government departments as well as being dependent on input from external private agencies, such as the Food and Drug Administration in the USA. When internal government departments and external agencies are too concerned with maintaining political power, public health can be endangered. An example is the failure of the American and other governments to introduce timely screening of blood banks when new viruses have been discovered.